Institution: | 1. Chaire de Recherche en Environnement H-Q/CRSNG/UQAM, C.P. 8888, Succ. Centre Ville, Montréal, Québec, H3C 3P8, Canada (author for correspondence, e-mail 2. Laboratorio de Biologia Ambiental, Santarem-UFPa campus, Brazil 3. CINBIOSE, UQAM, Montréal, Québec, Canada 4. Laboratorio de radioisótopos., Inst. de Biofisica da UFRJ, Rio de Janeiro, Brazil 5. UFPa, Belém, Brazil
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